Show HN: I Built a Tool that Detects If a Voice is AI-Generated. 94% Accuracy

Hello from San Francisco!

I built this tool in 2023 that detects whether or not a voice is AI-generated.

It takes an audio clip of somebody speaking as input, and gives a binary classification ('human' or 'AI') as output.

I tested it tonight (2025) on some ElevenLabs clips and it still works!

I built it using a fairly simple Convolutional Neural Network (CNN).

Essentially, we pre-process the audio to produce a Mel Spectrogram, then we use the CNN to do image classification on the spectrogram.

The Jupyter notebook file that I wrote to train the model is in the 'model' dir, but if you wanna just use the tool, there's a python script in the root directory of the project.

I trained the model on a Paperspace (acquired by DigitalOcean) cloud server with one GPU.

Check it out!

Thanks, Zuri Obozuwa